40443744 has 48 divisors (see below), whose sum is σ = 115819200. Its totient is φ = 12255360.

The previous prime is 40443743. The next prime is 40443749. The reversal of 40443744 is 44734404.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40443743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18094 + ... + 20205.

It is an arithmetic number, because the mean of its divisors is an integer number (2412900).

Almost surely, 2^40443744 is an apocalyptic number.

40443744 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40443744 is an abundant number, since it is smaller than the sum of its proper divisors (75375456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40443744 is a wasteful number, since it uses less digits than its factorization.

40443744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38323 (or 38315 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 30.

The square root of 40443744 is about 6359.5396059778. The cubic root of 40443744 is about 343.2551940399.

The spelling of 40443744 in words is "forty million, four hundred forty-three thousand, seven hundred forty-four".